Open the "Control Panel" menu in the Windows operating system.

Select the "Internet Options" icon on the Control Panel main menu.

Go to the "Content" option on the tab menu in the Internet Options window.

Click the "Settings" button under Content Advisor in the Content menu.

Hit the "Approved Sites" tab in the Content Advisor.

Type the Webtrends URL under "Allow This Website" and click "Never" to block the site.

Click "OK" to close the Content Advisor window.

Access the "System Preferences" menu on your Mac OS X.

Click the "Systems" icon along the bottom row in System Preferences. Click the "Accounts" icon.

Double-click the lock icon in the lower left corner. Enter your administrative name and password for the operating system. Click the "OK" button. (The administrative name and password are mandatory to make any changes to the Safari browser settings.)

Go back to the System Preferences menu. Click the "Parental Controls" icon.

Select the user account on the operating system that you'd like to block Webtrends from. Click "Enable Parental Controls."

Go to "Website Restrictions" in the Parental Controls window and click "Content."

Hit the plus sign button below the list of sites. Enter "Webtrends.com" in the text field provided and click "OK."

Highlight the Webtrends URL in the list of sites. Click the "Customize" button and opt to never allow access to Webtrends in the Safari browser.